Novel CDDITA-Based-Grounded Inductance Simulation Circuits

This article reports two current differencing differential input transconductance amplifier (CDDITA)-based configurations for simulating the behaviour of lossless- and lossy-grounded inductors. The first proposed configuration simulates the behaviour of a pure grounded inductor while the second realizes the working of a grounded series LC network. Both the proposed configurations are purely resistorless and exhibit several merits like: use of grounded capacitors only, electronic adjustment of realized inductance value, no requirement of matched capacitances and CDDITAs, un-deviated performance under nonideal conditions, full utilization of used CDDITA blocks and low active and passive sensitivities indexes. On detailed literature review, it has been found that there is no CDDITA-based pure inductor/series LC simulation circuits reported so far. Therefore, this work can be considered as the first attempt to design grounded pure inductor/series LC simulation circuits employing CDDITA active element. To ascertain the utility of proposed structures, a voltage-mode (VM) high pass filter and notch filtering circuit are realized using presented pure inductance simulator and LC network simulator, respectively. Validity of all the circuits is confirmed by executing PSPICE simulations based on CMOS CDDITA model.